broadcast antennas

A portable 2-element VHF yagi  ^pop - Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.

Roll-up & Copper JPole antennas - Roll-up and Copper Pipe J-Pole Antennas for 144 Mhz.

SWR: Maximum allowable VSWR - VSWR (voltage-standing-wave-ratio) represents the degree with which an antenna is "matched" to the system impedance. Most modern antennas do not require any tuning for optimum performance. VSWR is one of the easiest parameters to measure and VSWR meters are becoming very popular antenna installation tools

Mobile Helix Antennas for HF - Normal mode helix antennas for HF mobile. Photos andn plan for a 20 meters mobile helix antenna by N2MH

Construction Practices - The construction of light weight structures that support wire antennas requires some definite insight into the behavior of the materials

Copper J-Pole Antennas - Conejo Valley Amateur Radio Club, article edited by Rory Eikland, KG6HCU and Ken Larson, KJ6RZ, they have had excellent experience building and using J-Pole antennas, and share their experience on planning VHF and UHF Jpole antennas.

Antennas for 136kHz - A very long and exaustive documentation on building antennas for 136 khz. Includes links to antenna design software for longwave

Antenna Tuning - Tuning mobile and base antennas, measuring SWR.

A Magnetic Loop antenna for 7-21 mhz - If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter

Travel loop antennas Priority listing - PA11019 Travel loop antennas, these antennas cover 6.300 to 29.200 mHz , handle 35 Watts and have a packing size of 43 cm, ideal for fieldwork, or mobile operations.

Quad or Loop antenna - Information about quad and loop antennas, matching tips, differences on polarization and impedence by PA0FRI

Antenna Selection Made Easy - This page will help you answer important questions about antenna selection before you talk to a supplier. After reading this paper, you should be able to better determine the most important parameters you need to know for your antenna selection criteria.

VHF/UHF Yagi Antenna Design  ^{updated  pop} - Design your vhf yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna in the VHF, UHF by K7MEM

How create simple dipoles - How to create a simple but effective half wave dipole, illustrated instrucions on how to build wire antennas

Sauder Electronics - Manufacture of microphones, cables, antennas, antenna mours, connectors and other accessories

Autotena - Antenna manufacturer in Taiwan, products range are RF communication antennas ( CB, VHF, UHF, Dual band, Base Station, Marine, GPS,GSM, PCS, Cellular, DVB-T ) , Amplifiers , Mounting Kit ,Accessories & Related products.

Alpha Delta Communications - Manufacturers and distributors of coaxial surge protectors, coaxial switches, HF fixed wire antennas

VLF Time Broadcasts - VLF Time Signal Stations, Station List Compiled by William Hepburn, LWCA

Antenna Noise and Signal Cancelling at LF - The fact that the phasing between a wanted signal and an unwanted signal can be different on different antennas is put to advantage. With this condition, the unwanted signal can be cancelled out by controlling amplitude and phase. The heart of the system is some form of phase control circuitry.

Butternut manuals - Manuals of butternut antennas

Electron Tubes and Vacuum Tubes for Industry - Electron tube and vacuum tube stock-list with prices 4. Audio, broadcast and industrial tubes, triodes, tetrodes, thyratrons, ignitrons, vidicons and CRT's, microwave devices, nixies and receiving types + Bird RF devices and test equipment. Quality tubes at reasonable prices with many hard to find items available

GI Joe's radio electronics Priority listing - Dealer for Cb radios, Cb antenna & accessories Galaxy radio, Cobra cb radio, Ranger, Texas Star, Palomar. Police scanner, radar detector, GPS, GMRS, FRS, Wilson cellular amplifier & antennas. Owners manuals, schematics and links.

AM Loop Antenna Calculator - Java script calculator for AM loop antennas

Ferrite on Reducing RFI - Using ferrite to reduce radio frequency interference with your PC monitor or antennas with your receivers or transceivers.

QRM and noise reduction Priority listing - You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM